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Questions and Answers
What does contractility refer to in muscle tissue?
Which property of muscle tissue allows it to respond to stimuli from motor neurons or hormones?
What is the role of extensibility in muscle function?
Which property of muscle tissue describes its ability to return to its original length after being stretched?
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What condition describes a lack of extensibility in muscle tissue?
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What characterizes the property of contractility in muscle tissue?
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What is the consequence of a lack of extensibility in muscle tissue?
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Which of the following best describes the property of elasticity in muscle tissue?
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Which property of muscle tissue allows it to respond to motor neuron stimulation?
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What happens when muscles contract according to their properties?
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How do extensibility and contractility interact during elbow flexion?
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Study Notes
Properties of Muscle Tissue
- Contractility: Muscle cells can forcefully shorten, allowing for movement like flexing the elbow. Muscles can only pull, not push.
- Excitability: Muscles can respond to stimuli, such as those from motor neurons or hormones.
- Extensibility: Muscles can be stretched, like the elbow extensor muscles extending to allow elbow flexion. Lack of extensibility is called spasticity.
- Elasticity: Muscles can recoil and return to their original length after being stretched.
Muscle Tissue Properties
- Contractility: Muscle cells can forcibly shorten. This allows for movements like flexing the elbow by contracting the biceps brachii muscle. Muscles can only pull, not push.
- Excitability: Muscles can respond to stimuli. These stimuli can be from motor neurons or hormones.
- Extensibility: Muscles can be stretched. For example, to flex the elbow, the extensor muscles must extend to allow for the movement. A lack of extensibility is called spasticity.
- Elasticity: Muscles can bounce back to their original length after being stretched.
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Description
Explore the essential properties of muscle tissue, including contractility, excitability, extensibility, and elasticity. This quiz will test your knowledge on how muscles function and adapt to stimuli, contributing to movement and overall physical performance.
